Compiling

webpack.config.js

@@ -33,7 +33,7 @@ module.exports = {
         test: /\.scss$/,
         use: ExtractTextPlugin.extract({
           fallback: 'style-loader',
-          use: 'css-loader?url=false!postcss-loader!sass-loader?sourceMap'
+          use: 'css-loader?url=false!postcss-loader!sass-loader'
         }),
         include: src
       }